Keep Out! Door Alarm: Build Your Own Key-Card Security System!

 
9780439668354: Keep Out! Door Alarm: Build Your Own Key-Card Security System!

The package contains everything you need to build a computerized talking door alarm. -22-page book filled with fascinating facts about security systems -2 key cards with stickers -Circuit board with components you connect yourself-just twist wires -Case Burglars beware! The alarm voice declares "Keep Out!" before the siren sounds. Swipe the special key to turn your alarm on. Swipe the key again to turn it off!

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Published by Not Avail
ISBN 10: 0439668352 ISBN 13: 9780439668354
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Published by Not Avail
ISBN 10: 0439668352 ISBN 13: 9780439668354
New Hardcover Quantity Available: 1
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Ergodebooks
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